| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 58°F | 48°F | n/a |
| February | 41°F | 63°F | 51°F | n/a |
| March | 51°F | 71°F | 60°F | n/a |
| April | 57°F | 78°F | 67°F | n/a |
| May | 60°F | 82°F | 71°F | n/a |
| June | 72°F | 88°F | 80°F | n/a |
| July | 74°F | 93°F | 83°F | n/a |
| August | 73°F | 91°F | 81°F | n/a |
| September | 67°F | 88°F | 77°F | n/a |
| October | 55°F | 81°F | 66°F | n/a |
| November | 42°F | 69°F | 54°F | n/a |
| December | 41°F | 59°F | 49°F | n/a |
| Index | Thomaston | Alabama | National |
| Air quality index | 36 | 37 | 42 |
| Pollution index | 2,161,830 | 3,012,339 | 2,726,193 |
| Measurement | Total |
| Days measured | 245 |
| Days with good air quality | 229 |
| Days with moderate air quality | 16 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.990% |
| Lead | 0.020% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Faunsdale, AL | 99 | 35 | 30.0% |
| Uniontown, AL | 1,918 | 35 | 30.0% |
| Providence, AL | 121 | 36 | 28.0% |
| Dayton, AL | 55 | 36 | 28.0% |
| Sweet Water, AL | 213 | 36 | 28.0% |
| Thomaston, AL | 415 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Tyonek, AK | 415 | 31 | 38.0% |
| San Lucas, CA | 415 | 37 | 26.0% |
| Armington, IL | 415 | 44 | 12.0% |
| Coldiron, KY | 415 | 39 | 22.0% |
| Convent, LA | 415 | 41 | 18.0% |
| Thomaston, AL | 415 | 36 | 28.0% |
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